Automatic brake-setting device



y s. R HARDY ET AL.

AUTOMATIC BRAKE SETTING DEVICE Filed JulylZ 1921` 4 2 Sheets-Sheet l5MM/, l?, [4a/wry' JNVENToRs MMM (Cui,

\ A TTORNEYS S. R. HARDY ET AL AUTOMATIC BRAKE SETTING DEVICE Filed July12. 1921 2 Sheets-Sheet 2 WWW/NAW TTORNEYQ' Patented 7, 1923,

narran f SAMUEL R. HARDYvAND ROYAL A. COCHRAN, OF DAYTON, TEXAS.

AUTOMATXC BBAKE-SETTNG DEVICE.

Application led July l2,

' an apparatus which is connected to a railway block signal, andoperated thereby, to automatically release the air, and set the brakesof the train, in case the signal is ignored, and thereby stop the train.

Another object is to provide a device of this character which may bereadily connected to the signals now in common use and which will notrequire any change in the construction of the locomotive and carequipment now in common use.

A further feature resides in the provision of a simple 'and inexpensiveapparatus which will be positive and accurate in operation.

With the above and other objects in view this invention has particularrelation to certain novel features ci construction, operation andarrangement of parts, an'eXample otwhich is given in this specificationand illustrated in the accompanying drawings. wherein Y Y y Figure 1 isa side view of the device partially in section, and

Figure 2, shows a 'front elevation, partially in section.` l

Referring to the drawings, the numeral 1 designates a railway track and2 designates the truck which moves thereon. Agt one side of the trackthere is a boX 3 in which is enclosed a wedge like plunger et. Thisplunger movies on roller bearings as 5 enclosed in the bottom ofthe box.

The numeral 6 designates the signal standV which carries the signal 7.Fastened to, and operated by the signal, there is a sprocket wheel 8 inalignment with a corresponding` wheel 9 rotatably mounted on the standstand, a movable signal mounted thereon,

1921. Serial Il'o. 484,137,

- beneath the signal. A sprocket chain 1() operates overthese wheels andoperates the latter from the former. rthe sprocket wheel 9 is connectedto the plunger 4 through the connecting rod 11, V

Pivoted at one end in the box 3, there is a blade 12 which works througha slot 18 in the top ot' the box. When the signal is set to permit thetrain to proceed theplunger 4 is withdrawn from under said blade,through the mechanism described, but when the signal is set to stopfthetrain the plungerV 1 is driven forwardly, through the rod 11, and runsunder and lifts the blade and projects it up through the slot 13, somedistance above the level of the rails.

A hanger 14C is provided which is `attached to the front ournal box ofthe truck fand depending from it are'the rods 15, 15,

whose lower ends sustain a vertically moveable cross head 16. i

The lower ends of the rods 15 support a rangible plug 17, which plugsair line 1 Vleading from the main hose.. The cross head is hood-like inorm and partially sur- 7e rounds and protects the plug 17, asillustrated in Figure 1. Should the engineer refuse to stop when thesignal is set against him the blade 12, being in elevated position, willbreak the plug 17 and release the air with the result that the brakeswill be auto- Vnlatically set and the train stopped.

V.any other device for releasing the air plug 17, if desired. lWhat weclaim is lncombination a box arranged alongside a railway track. a wedgeshaped plunger movable transversely through said box, a signal operativeconnections between the signal and plunger through which the latter maybe actuated from the former, the top of said box being provided with aslot, a blade in said box pivoted at one end and aligned with andadapted to work through said slot, said plunger being disposed to workunderneath said blade and to move the same upwardly when in one positionbut to permit the same to be lowered by gravity when in anotherposition, a hanger attached to a railway names to this speeiicationinthe presence of truck, a rangible plug in the Yail' line of the twosubscribing Witnesses. Y train and supported by said hanger and ar-SAMUEL R. HARDY. Aranged' in posit-ion to align above said blade ROYALA. CGCHRAN. 5 a vertically movable cross head partially sur" Witnesses:

rounding said plug. Y v J. B. WOOLDRIDGE,

Y In 'testimony whereof We have signed our J. S. FLOW-ERS.

